I’d call it a dagger, not a sword. Most likely it’s a hunting dagger used to finish off an animal in a snare. It requires much to close in fighting to be a sword.
5000 years ago, if you were up against the guy who had this, you would think it was a sword. They were rare and expensive -- you wouldn't have one.
Your weapon would be a sharp stick, maybe a short stick with a stone tied to the end of it. The guy with the sword would close on you and stab you in the belly. The wound would put you out of the fight right away, but would only be fatal after a couple of days.